1669132946 has 8 divisors (see below), whose sum is σ = 2696291724. Its totient is φ = 770369040.

The previous prime is 1669132943. The next prime is 1669132979. The reversal of 1669132946 is 6492319661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1572994921 + 96138025 = 39661^2 + 9805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1669132946.

It is not an unprimeable number, because it can be changed into a prime (1669132943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32098685 + ... + 32098736.

Almost surely, 2^1669132946 is an apocalyptic number.

1669132946 is a deficient number, since it is larger than the sum of its proper divisors (1027158778).

1669132946 is a wasteful number, since it uses less digits than its factorization.

1669132946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64197436.

The product of its digits is 419904, while the sum is 47.

The square root of 1669132946 is about 40855.0235099675. The cubic root of 1669132946 is about 1186.2156327645.

The spelling of 1669132946 in words is "one billion, six hundred sixty-nine million, one hundred thirty-two thousand, nine hundred forty-six".